61:08:09:20Hydrostatic pretest -- Blowoff
Section · Administrative Rules of South Dakota · View on sdlegislature.gov ↗
valve requirements. Each locomotive and vertical-type boiler must have a blowoff pipe in direct connection with the lowest water space practicable. The pipe must be fitted with a stop valve and run full size without reducers or bushings.
Source: 23 SDR 139, effective March 5, 1997.